//百度统计
var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3Fcb1197c491f24eb20957a4310d08d8aa' type='text/javascript'%3E%3C/script%3E"));
//返回头部
var $backToTopTxt = "返回顶部", $backToTopEle = $('
').appendTo($("body"))
.attr("title", $backToTopTxt).click(function() {
$("html, body").animate({ scrollTop: 0 }, 1200);
}), $backToTopFun = function() {
var st = $(document).scrollTop(), winh = $(window).height();
(st > 0)? $backToTopEle.show(): $backToTopEle.hide();
//IE6下的定位
if (!window.XMLHttpRequest) {
$backToTopEle.css("top", st + winh - 166);
}
};
$(window).bind("scroll", $backToTopFun);
$(function() { $backToTopFun(); });
